One of the most public episodes of gatekeeping in modern science was the case of so-called 'cold fusion'. At a news conference in 1989 the electrochemists Martin Fleischmann and Stanley Pons announced that they had found evidence of nuclear fusion in palladium electrodes loaded with deuterium. There was worldwide interest. Many groups sought to reproduce the results, most unsuccessfully. Within months, the prevailing view became strongly negative. The claims of Fleischmann and Pons came to be regarded as disreputable, as well as false. As the Caltech physicist David Goldstein put it, cold fusion became 'a pariah field, cast out by the scientific establishment' (Goldstein 1994). The case would already be interesting for students of gatekeeping if the story had ended at that point. Even more interestingly, however, the field survived and persisted. It has been enjoying a modest renaissance, with recent government funding both in the US and the EU. This piece offers an opinionated introduction to cold fusion as a case study of scientific gatekeeping, discussing both its early and recent history
Differential privacy (DP) provides a mathematical guarantee limiting what an adversary can learn about any individual from released data. However, achieving this protection typically requires adding noise, and noise can accumulate when many statistics are measured. Existing DP synthetic data methods treat all features symmetrically, spreading noise uniformly even when the data will serve a specific prediction task. We develop a prediction-centric approach operating in three regimes depending on available structural knowledge. In the causal regime, when the causal parents of $Y$ are known and distribution shift is expected, we target the parents for robustness. In the graphical regime, when a Bayesian network structure is available and the distribution is stable, the Markov blanket of $Y$ provides a sufficient feature set for optimal prediction. In the predictive regime, when no structural knowledge exists, we select features via differentially private methods without claiming to recover causal or graphical structure. We formalize this as PRISM, a mechanism that (i) identifies a predictive feature subset according to the appropriate regime, (ii) constructs targeted summary statistics, (iii) allocates budget to minimize an upper bound on prediction error, and (iv) synthesizes data via graphical-model inference. We prove end-to-end privacy guarantees and risk bounds. Empirically, task-aware allocation improves prediction accuracy compared to generic synthesizers. Under distribution shift, targeting causal parents achieves AUC $\approx 0.73$ while correlation-based selection collapses to chance ($\approx 0.49$).
The article is devoted to revealing the mechanisms of depicting the process of identity transformation in the literary work of the Japanese diaspora in Brazil. The aim is achieved by studying small prose in the genre of naturalism using the material of the Collection of Colonia Stories. The time frame is limited by the arrival of immigrants in 1908 and the prohibition of foreign language printing in 1941.The article describes the formation of the collective identity of the Japanese in Brazil from a historical perspective. The key features of the Japanese emigration, further reflected in the literary work of the diaspora in Brazil, are revealed: regional localization, migrants’ belonging to the peasantry, the formation of a special koroniago dialect. Special attention is paid to the reasons for the split within the diaspora, which became the main motif in the problems of literary works. Intragroup disunity has its roots in the social structure of the Japanese community and was stimulated by the urbanization of the 1930s.The article analyzes the process of formation of a distinctive center of literary creativity in the Japanese emigration in Brazil. The mechanisms of alienation of literary works based on the opposition between “pure” and “mass” literature are revealed.The transformation of Japanese identity in Brazil is evidenced by analyzing the problematics of the works. The painful process of integration into the host community gives center stage to the racial-ethnic issues of imin bungaku. The works depict the interaction between Japanese and Brazilians through inter-ethnic conflicts. The works studied reflect discursive patterns of describing the racial Other in the space of literature. The works are particularly sensitive to the betrayal of intra-community bonds and the acquisition of the traits of the host community. The process of identity transformation is examined in literature through the prism of social status, ethnicity, and gender discrimination. The analysis of the works shows the evolution of the representation of the Other from demonization and rejection to acceptance of the transformed identity. The change of perspective on the formation of a bicultural “Japanese-Brazilian” identity on the eve of World War II was interrupted by the outburst of Japanese nationalism during the war years. However, the acceptance of one’s own otherness and the literary representation of this process would become the foundation for the successful integration of the Japanese into Brazilian society in the postwar decades.
This article argues that So Long a Letter (1979) constructs African female subjectivity as a dialogical self forged through the confessional epistle’s denouncement of colonial and patriarchal forces that have long sought to bend African women’s heads to external and internal orderings of their society. It contends that Bâ carves temporal and narrative spaces for African women by casting a subversive gaze on the interlocking systems of oppression that repress their sense of agency. Through the enabling potential of epistolary writing, the Senegalese writer fashions her heroine into a subjectivity that is neither given nor fixed, but constructed in the shifting positions of friend, wife, mother, widow, and at times Bâ’s own mouthpiece, and through a continuing dialogue with past memories, present dilemmas, and alternative temporalities beyond dominant chrononorms. Drawing on Bakhtinian dialogism, Anzaldúa’s mestiza consciousness, Freeman’s chrononormativity, and Barrett’s affective continuum, this analysis therefore seeks to offer a transdisciplinary investigation into the ways how the novel reimagines African female subjectivity as a dialogic process of becoming emanating from the interstices of epistolary voice, affective temporalities, and the repudiation of colonial and patriarchal chrononormative imperatives. Ultimately, the paper concludes that the novel becomes a canvas onto which Bâ inscribes alternative modes of self-articulation, collective agency, and female futurity for African women.
History of Africa, African languages and literature
Wuttikorn Ponwitayarat, Raymond Ng, Jann Railey Montalan
et al.
Sentence embeddings are essential for NLP tasks such as semantic search, re-ranking, and textual similarity. Although multilingual benchmarks like MMTEB broaden coverage, Southeast Asia (SEA) datasets are scarce and often machine-translated, missing native linguistic properties. With nearly 700 million speakers, the SEA region lacks a region-specific embedding benchmark. We introduce SEA-BED, the first large-scale SEA embedding benchmark with 169 datasets across 9 tasks and 10 languages, where 71% are formulated by humans, not machine generation or translation. We address three research questions: (1) which SEA languages and tasks are challenging, (2) whether SEA languages show unique performance gaps globally, and (3) how human vs. machine translations affect evaluation. We evaluate 17 embedding models across six studies, analyzing task and language challenges, cross-benchmark comparisons, and translation trade-offs. Results show sharp ranking shifts, inconsistent model performance among SEA languages, and the importance of human-curated datasets for low-resource languages like Burmese.
In the paper we study the existence of balanced metrics of Hodge-Riemann type on non-Kähler complex manifolds. We first find some general obstructions, for instance that a Hodge-Riemann balanced manifold of complex dimension $n$ has to be $(n - 2)$-Kähler. Then, we focus on the case of compact quotients of Lie groups by lattices, endowed with an invariant complex structure. In particular, we prove non existence results on non-Kähler complex parallelizable manifolds and some classes of solvmanifolds, and we show that the only nilmanifolds admitting invariant structures of this type are tori. Finally, we construct the first non-Kähler example of a Hodge-Riemann balanced structure, on a non-compact complex manifold obtained as the product of the Iwasawa manifold by $\mathbb C$.
Understanding how treatment effects vary across patient characteristics is essential for personalized medicine, yet randomized controlled trials (RCTs) are often underpowered to detect heterogeneous treatment effects (HTEs). We propose a framework that improves the efficiency of conditional average treatment effect (CATE) estimation in RCTs by leveraging large observational studies (OS) while preserving the unbiasedness of RCT estimates. By framing CATE estimation as a supervised learning problem, we show that estimation variance is minimized using the counterfactual mean outcome (CMO) as an augmentation function. We derive finite-sample error bounds and establish conditions under which OS data improves CMO estimation, and thus CATE efficiency, even in the presence of confounding in the OS or outcome distribution shifts between populations. We introduce R-OSCAR (Robust Observational Studies for CMO-Augmented RCT), a two-stage estimator that calibrates OS outcome predictions to the RCT population and corrects residual biases through regularized regression. Simulations show that R-OSCAR can reduce the RCT sample size needed for HTE detection by up to 75%, maintaining robustness to model misspecification. Application to the Tennessee STAR study confirms these efficiency gains. Our framework offers a principled approach to integrating observational and experimental data using tools from statistical learning and transfer learning.
The article analyzes the current state of economic relations between Japan and the countries of Southeast Asia - trade as the basic and most traditional form of economic cooperation, mutual investment, official development assistance. The changes that occurred in this area in the period from the turn of the 21st century to the present time are considered. The latest statistical data - the basis of the assessment of the current state of economic relations between Japan and Southeast Asian countries - is given. The analysis made it possible to conclude that Japan in the early 21st century was more turned in the field of foreign trade to the United States, the major economies of North-East Asia, rather than to the countries of South-East Asia, but at the same time, they have a certain, noticeable niche in trade with Japan. Based on the calculations carried out, the key partners of Japan in each of the three main areas of economic cooperation - trade, mutual investment, official development assistance - are identified from among the countries of South-East Asia. It was revealed that the main foreign trade partners of Japan among Southeast Asian countries are Singapore, Malaysia, Thailand, Indonesia - that is, economically more developed countries. ASEAN countries retain in the 21st century the position of significant suppliers of mineral fuel, raw materials, food, seafood to Japan. Japan, in turn, exports to Southeast Asia industrial goods, primarily engineering products. It is shown that since the middle of 2000-s the volume of FDI from Japan in the most developed countries of Southeast Asia has significantly increased. Japan’s much more modest trade and investment ties with the less developed Southeast Asian countries (Laos, Myanmar, Cambodia) are balanced by official development assistance (ODA). The analysis of the most relevant and effective in the 21st century formats of multilateral cooperation of Japan and Southeast Asian countries is also conducted.
Abstract Silicone breast implants (SBIs) have been subject to scientific scrutiny since the 1960’s because of their potential link with systemic disease symptoms. Breast implant illness (BII) is a cluster of over 56 (systemic) symptoms attributed by patients to their SBIs. BII remains an unofficial medical diagnosis, although its symptoms include but are not limited to the clinical manifestations of autoimmune/inflammatory syndrome induced by adjuvants (ASIA). The aim of this study was to prospectively analyse the effect of explantation on clinical manifestations of ASIA/BII symptoms, as well as to compare (breast-surgery specific) QoL in patients pre- and postoperatively while recording relevant perioperative/patient data. A prospective cohort study was conducted on 140 patients consulting a single surgeon for explantation of SBIs at a single clinic from 2019 to 2021 via their general practitioner, a medical specialist or self-referral. Of all patients, medical (implant) history, lifestyle factors and biometric data were obtained. Patients filled out a novel ASIA/BII symptom-survey termed the ASIA-scale, three domains of the SF-36 and the augmentation module of the BREAST-Q before and four months after the operation. A total of 109 patients completed both the pre- and postoperative survey with a mean follow-up duration of 205 days. There was a significant decrease in all individual symptom scores as well as ASIA-scale summary scores after explantation (p < .001). All SF-36 subdomains showed significant improvement postoperatively (p < .001). The BREAST-Q subdomain ‘satisfaction with breasts’ improved significantly after explantation (p = .036). No statistically significant association was found between any clinical parameters (such as age, capsulectomy, rupture etc.) and the recovery of symptom scores. This is the largest prospective cohort study on SBI explantation to date showing significant improvement of the most common systemic complaints in SBI patients as well as improvement of satisfaction with breasts and overall quality of life.
Andrei A. Bazarov, Marina V. Ayusheeva, Svetlana V. Vasilieva
Introduction. The paper examines collections of rare Mongolian-language Christian editions housed at depositories of Zabaykalsky Krai and Buryatia. Goals. The study attempts a socioarchaeographic analysis of the mentioned collections at the Institute for Mongolian, Buddhist and Tibetan Studies (SB RAS) and the Kuznetsov Zabaykalsky Krai Museum of Local History and Lore. Materials and methods. In terms of methodology, the work rests on ‘cognitive history’ and some aspects of historical phenomenology. The paper assumes a content analysis of the collections be instrumental both in identifying Christian Buryat readers’ queries throughout the 19th and early 20th centuries, and in revealing specificities of missionary activity among Mongolic peoples in pre-revolutionary Russia. Conclusions. The content analysis of the two collections shows Transbaikalia was witnessing a specific cooperation between Protestant and Orthodox Christian missions. Personal libraries of Buryat Christians were largely compiled from Mongolian translations of the Bible funded mainly by the Protestant missions. The study attests to that the most promising missionary activity among Buryats (and Mongols at large) — dissemination of Christianity via primary education — was not supported by representatives of the missions. Our insights into the history of the collections show that results of Christian missionary translation activities aroused interest of Buryat Buddhists, and the latter tended to include such biblical translations into their libraries. Due to linguistic and historical circumstances, the Russian collections of Mongolian-language Christian publications have remained virtually unattended — both in terms of bibliographic description and scholarly research — for a long time. However, territorial, manufacturing and historical circumstances make the examined editions essentially unique. Our content analysis confirms there is a need for such investigations to reveal a coherent agenda of religious publications once used for the development of Christianity within Mongolian culture.
History of Asia, Political institutions and public administration - Asia (Asian studies only)
The ionization losses -- the losses of energy by fast charged particles traveling through a matter -- have been under study for more than 100 years. The theoretical explanation of this process spans similar period. About 75 years ago, Lev Landau published a theoretical paper on the ionization losses, which drastically leveled up the research and still remains amongst the most cited in the field. The present note digests the history of theoretical development and attempts to clarify Landau's method of research and the function named after him.
The first solar neutrino experiment led by Raymond Davis Jr. showed a deficit of neutrinos relative to the solar model prediction, referred to as the "solar neutrino problem" since the 1970s. The Kamiokande experiment led by Masatoshi Koshiba successfully observed solar neutrinos, as first reported in 1989. The observed flux of solar neutrinos was almost half the prediction and confirmed the solar neutrino problem. This problem was not resolved for some time due to possible uncertainties in the solar model. In 2001, it was discovered that the solar neutrino problem is due to neutrino oscillations by comparing the Super-Kamiokande and Sudbury Neutrino Observatory results, which was the first model-independent comparison. Detailed studies of solar neutrino oscillations have since been performed, and the results of solar neutrino experiments are consistent with solar model predictions when the effect of neutrino oscillations are taken into account. In this article, the history of solar neutrino observations is reviewed with the contributions of Kamiokande and Super-Kamiokande detailed.
Este artigo analisa os impactos da presença dos grupos de línguas gbe na formação do léxico empregado no detalhamento das cicatrizes rituais da população africana presente no distrito diamantino da capitania de Minas Gerais em meados do século XVIII. O enfoque é dado sobre o processo histórico de difusão do termo “geja”, explorando tanto os seus significados ligados a padrões específicos de escarificações como o seu uso generalizado para marcas corporais africanas, independentemente da origem étnica. Examina-se a sua emergência como índice de uma cadeia mais ampla de significados atrelados à etnogênese jeje em um contexto de grande concentração urbana de povos da Costa da Mina.
“With Two Gejas on Each Temple”: scarification and the process of visual translation in the jeje diaspora of 18th Century in Minas Gerais
Considering the visual culture of the African diaspora, this article analyzes the effects of the presence of Gbe language groups in the formation of the lexicon used in detailing the ritual scarification of the African population present in the diamond district of the captaincy of Minas Gerais in the eighteenth century. It focuses on the historical process of spreading the term geja, exploring both its meanings linked to specific patterns of scarification and its widespread use for African body markings in general. Its emergence is examined as an index of a broader chain of meanings connected to the Gbe ethnogenesis in a context of great urban concentration of people from Costa da Mina.
Jeje Nation | African Diaspora | Gejas | Scarification
The article is based on the author’s most recent book Powershift: India-China Relations in a Multipolar World (2020). It retraces the most salient moments and episodes in the India China border issue ever since the crisis broke out in 1959. What we learn from history is Chinese leaders have often shaped their policy on India as part of a wider geopolitical calculus, typically linked to the degree of pressure Chinese perceive on other geopolitical fronts. For India too, the nature of great powers relations impacts how it formulates China policy. This basic framework has remained relevant until the present day.Over the past decade, as the world order began shifting to a multipolar balance of power, India and China have confronted challenges in their relationship. The relationship is at a crossroad, and both Delhi and Beijing are struggling to find an equilibrium that allows both sides to pursue their interests and visions. Nevertheless, as Asia is returning to what it was for 1,800 years of the last two millennia, and, it is that big picture trend that Indian and Chinese leaders must pay attention to. Ultimately, this means stabilising India China relations
In a previous paper, we showed that a class of time travel paradoxes which cannot be resolved using Novikov's self-consistency conjecture can be resolved by assuming the existence of multiple histories or parallel timelines. However, our proof was obtained using a simplistic toy model, which was formulated using contrived laws of physics. In the present paper we define and analyze a new model of time travel paradoxes, which is more compatible with known physics. This model consists of a traversable Morris-Thorne wormhole time machine in 3+1 spacetime dimensions. We define the spacetime topology and geometry of the model, calculate the geodesics of objects passing through the time machine, and prove that this model inevitably leads to paradoxes which cannot be resolved using Novikov's conjecture, but can be resolved using multiple histories. An open-source simulation of our new model using Mathematica is available for download on GitHub. We also provide additional arguments against the Novikov self-consistency conjecture by considering two new paradoxes, the switch paradox and the password paradox, for which assuming self-consistency inevitably leads to counter-intuitive consequences. Our new results provide more substantial support to our claim that if time travel is possible, then multiple histories or parallel timelines must also be possible.
Motive and electrical energy has played a crucial role in human civilization. Since Ancient times, motive energy played a primary role in agricultural and industrial production as well as transportation. At that time, motive energy was provided by work of humans and draft animals. Later, work of water and wind power was harnessed. During the 19$^{\text{th}}$ century, steam power became the main source of motive energy in USA and Britain. Modern transportation and industry depend on the work of heat engines that use fossil fuel. A brief history of different sources of energy is presented in this work. The energy consumptions in pre-industrial and industrial societies are calculated. The lost opportunities for the Second Industrial Revolution (such as fast breeder reactors and thermonuclear power stations) are discussed. The case that the Solar Power will become the main source of energy by the second half of this century is presented. It is calculated that the Solar Power has the potential to bring about the new Industrial Revolution. Based on material and energy resources available in the Solar System, it is demonstrated that the Solar System Civilization supporting a population of 10 Quadrillion with a high standard of living is possible.